Pressing device for sole-laying machines



Jan. 14, 1 9 30.

' F. w. CHRISTY ET AL PRESSING DEVICE FOR SOLE LAYING MACHINES Filed Dec. 31, 1928 2 SheetS -Sheet wen/tars: 17117122 W UibT'ifiZ" by Jcureeo H. Tor/ e "Atty v F. w. CHRISTY ET AL 1,743,845

PRESSING DEVICE FOR SOLE LAYING MACHIIINES Filed Dec. 31, 1928 2 Sheets-Sheet 2 Q Q Q w Q wk wM Q Q, @8

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Patented Jan. 14, 1930 UNITED STATES PATENT OFFICE FRANK W. CHRISTY AND JAMES A. TORREY, OF BEVERLY MASSACHUSETTS PRESSING DEVICE FOR SQLE-LAYINQ MACHINES Application filed December 81, 1928. Serial No. 329,565.

This invention relates to improvements in.

pressing devices for sole laying machines and over the entire surface of the sole and which will press with equal effectiveness different sizes and styles of shoes.

The invention consists in an improved pressing device for sole pressing or laying ma-v chlnes as set-forth in the following specifics.

tion and particularly as pointed out in the claims thereof.

Referring to theldrawings: Figure 1 represents a plan view of a pressing device embodyingiour invention.

Fig. 2 is a side elevation of the device. Figr3 is a centralvertical section through the pressing device taken 'on-the' line 3-3 of Fig. 1, the device being illustrated in the position it assumes whena sole is being pressed.

against a shoe upper.

Fig. 4 is a transversesection taken on'the line 4.-4 of Fig. 1. V

Like numerals refer to like parts throughout the several views of the drawings; In the drawings, 5 represents abasewhich may be constructed either of wood or metal and which is preferably rectangular in form and has a flatcunder surface 6 and an undulated upper surface 7. An opening 8 extends entirely through the base 5 from top to bottom and is shaped similar to the outline of the sole of a shoe. Rigidly secured to the upper surface of-the base 5 andextending entirely thereacross' at the opposite ends thereof are angle bars 9 which are fastened to the base by bolts 10.

Located above the base 5 is a flexible casmg 11 preferably consisting of an upper layer of leather 12 and an under layer ofleather 13, both rectangular in form and stitched together adjacent to their edges at 14. The portions of the layers 12 and- 13 inside the row of stitches 11 are separable. At its opposite ends the casing 11 is reinforced by narrow plates 15 which are located above the upper layer of leather and beneath the lower layer of leather and said plates are clamped to said casing by bolts 16. The casing 11 is supported at one end thereof, a short distance above the upper surface. of the base .5; by means of the springs 17, one end of said springs being secured to an angle bar 9 and the other end of said springs being secured to the casing: The other end .of the casing is also secured above the base 5 by means of springs y 18 which are in turn secured toscrews 19 mounted in an angle bar 9 in which they may be adjusted by thumb nuts 20. The upper and lower layers of leather comprising the casing 11 are stretched tightly lengthwise thereof by means of the springs 17 and 18 and the lengthwise tension upon the casing may be varied by manipulating the nuts 20.

Located within the container 11 between the flexible and separable u per and lower members 1 2 and 13 thereof is a flexible fluid container 21, preferabl constructed of rubber and capable of hol ing either-air or water under pressure. The container 12 is supplied with a suitable valve 22 for admitting and discharging the pressure fluid which is preferably maintainedat' approximately 20 pounds pressure within the container.

In order to prevent a lateral movement of the casing 11 during the pressing operation side stays 23 consisting of flexible straps are secured to the opposite sides of the casing 11 and extend therefrom to a point beneath the base 5 where the opposite'ends of said stays are secured together by means of springs 24. The side stays 23 are secured to the casin 11 by being inserted between the upper an lower layers 12 and 13 thereof and being secured thereto by the stitches 14. The ends of the stays 23, to which the springs 24 are secured, are reinforced by plates 25 which are clamped to the opposite faces of said stays by means of bolts 26.

As an aid in securing the instep portion of the sole to the instep portion of the shoe with the same eflectiveness as the remainder of said sole, an instep support 27, preferably consisting of a block of rubber, is mounted beneath the instep pressing portion of the casing 11 upon a flat springv28, one end of which is rigidly secured by means of bolts 29 to the under surface of the base 5 and the other end of said spring being loosely mount 4 ed to slide upon a guide 30 which is in turn secured to the under surface of the base 5.

To eliminiate possible friction between the under surface of the casing 11 and the upper surface of the base 5 during the ressing operation, rollers 31 are interposed etween said surfaces, and said rollers may roll freely upon the upper surface of the base 5 the rotative movement of the rollers longitudinally of the base being limited by the engagement of the edge of head portions 32 of said rollers with the opposite sides of shallow ooves 33 which are provided in the opposite sides of the base 5. The head portions 32 also prevent the rollers from moving longitudinally thereof upon the base 5.

A shoe A to which a sole a is to be attached is mounted upon a last B in turn secured to a last holder C pivotally mounted at o to a support D, which in turn is secured to a plunger E. The position of the last holder C with respect to the support D is regulated by means of a plurality of adjusting screws d.

The plunger E may be operated by any suitable hand or power driven mechanism.

The general operation of the device hereinbefore specifically described is as follows Assuming that it is desired to attach a sole a to a shoe upper A, the latter is placed upon the last B which at this time is located at a suitable distance above the casing 11. The upper surface of the sole a and under surface of the shoe A are first coated with suitable cement and the sole (1 is placed in position upon the shoe. The plunger E is then operated to lower the shoe A and sole (1 until the sole contacts with and compresses the casing 11 and preferably from 500 to 600 pounds pressure is provided between the shoe, sole and flexible casing. When this pressure is applied, the tendency of the casing 12 will be to compress and sag somwhat, stretching the springs 17 and 18 and forcing the lower layer of flexible material 13 of the casing against the upper surface of the instep support 27 and the latter will be compressed somewhat and the spring 28 upon'which it is mounted will sag slightly beneath the pressure. The action of the instep support 27 will be to compress the fluid container 21 at the instep portion of the latter against the instep pressing portion of the upper layer 12 of the casing 11 and the instep portion of the sole a will be forced against the instep portion of the shoe with the same pressure and effectiveness that is provided over the entire surface of the sole. During the pressing operation the side stays 23 and springs 24 will tend to hold the flexible casing 11 securely in position above the upper surface of the base 5 and beneath the shoe A. Each type of shoe may be positioned above the flexible casing 11 by positioning the last holder G relatively to the support D by means of the adjusting screws (1.

. We claim: 1. A pressing device for a sole laying machine comprising, in combination, a base, a casing yieldingly supported upon said base and embodying therein separable layers of flexible material, an expandible and contractable fluid container located between said flexible layers, and means to prevent a lateral movement of the casing during the pressing operation. 2. A pressing device for a sole laying machine comprising, in combination, a base, a casing yieldingly supported upon said base and embodying therein separable layers of flexible material, an expandible and contractable fluid container located between said flexible layers, stays fast to said casing at o posite sides thereof, and yielding means astened to opposite adjacent ends of said stays land securing the latter together beneath said ase.

3. A pressing device for a sole laying ma: chine comprising, in combination, a base, a casing yieldingly supported upon said base and embodying therein se arable layers of flexible material, an expan ible and contractable fluid container located between said flexible layers, a yielding member mounted upon said base beneath sald casing, and a yielding instep supporting member mounted upon said yieldlng member and located beneath an instep pressing portion of the casing.

4. A pressing device for. a sole laying machine com rising, in combination, a base, a casing em odying therein upper and lower separable layers of flexible material, springs supporting said flexible layers above said ase, means to vary the tension on said springs, and an expandible and contractable fluid container located between said flexible layers.

5. A pressing device for a sole laying machine comprising, in combination, a base, a casing yieldingly supported upon said base and embodying therein separable layers of flexible material, an expandible and contractable fluid container located between said flexible layers, and anti-friction means interposed between the end portions of said casing and'the upper surface of said base.

6. A pressing device for a sole laying machine comprising, in combination, a base, a casing yieldingly supported upon said base and embodying therein separable layers of flexible material, an expandible and contractable fluid container located between said flexible layers, a flat spring mounted upon said chine comprising, in combination, a base, a casing embodying therein upper and lower 2 separablei'layers of flexible material, springs 'ible layers, means to vary the tension upon sald casing, stays fast to said casin at opposupporting" said flexible layers above said base, means to =vary the tension on said springs, an expandibleand contractable fluid container located between said flexible layers, stays fast ",to said casing at opposite ends thereof, andsprings connected to tions of said stays.

' 8. A pressing device for a sole laying masupporting said flexible layers above said base, means tovv vary the tension on said springs, an expandible and contractable fluid contalner located between said flexible layers, stays fast'to said casing at opposite ends thereof, spring connected to the end portions of said stays and rollers interposed between the end portions of said casing and the upper surface of said base.

9; A pressing device for a sole laying machine comprising,-in combination, a base, a casing yieldingly supported upon said base and embodying therein separable layers of flexible material, an expandible and contractable fluid container located between said flexsite sides thereof, springs fastene to opposite a djacent ends 0 said. stays and securing the latter together beneath said base, a yield- 1 ing member mounted upon said base beneath ing member upon said yiel 'ng member and our hands. 7

said vcasing, and a 'yieldin instep support of the casing.

In testimony whereof we have hereunto .set

, FRANK w. CHRISTY. y JAMES A. TORREY.

the end por- 

